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GB1527559A - Anti-lock brake control - Google Patents

Anti-lock brake control

Info

Publication number
GB1527559A
GB1527559A GB46754/76A GB4675476A GB1527559A GB 1527559 A GB1527559 A GB 1527559A GB 46754/76 A GB46754/76 A GB 46754/76A GB 4675476 A GB4675476 A GB 4675476A GB 1527559 A GB1527559 A GB 1527559A
Authority
GB
United Kingdom
Prior art keywords
signal
circuit
skid
reference signal
nov
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB46754/76A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motors Liquidation Co
Original Assignee
General Motors Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Motors Corp filed Critical General Motors Corp
Publication of GB1527559A publication Critical patent/GB1527559A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/176—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
    • B60T8/1763—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to the coefficient of friction between the wheels and the ground surface
    • B60T8/17633—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to the coefficient of friction between the wheels and the ground surface based on analogue circuits or digital circuits comprised of discrete electronic elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)

Abstract

1527559 Anti-skid braking systems GENERAL MOTORS CORP 10 Nov 1976 [20 Nov 1975] 46754/76 Heading F2F Voltage signals proportional to wheel speed are differentiated by a circuit 28, 30, 32 to provide a first signal to point 34, and are also supplied to a circuit comprising diode 42, capacitor 38 and resistor 40, which produces a second signal to point 34. On rapid deceleration of the wheel, the second signal has a delay rate, e.g. representative of deceleration on a low friction surface, which provides a reference for anti-skid control. The two signals are summed and the output used as an anti-skid control signal. As described they are integrated by circuit 46 to provide a speed error signal, and the brakes are released when this signal is greater than a reference signal fed to the negative input of comparator 64. This reference signal has a fixed component from source B+, via resistor 72 and a variable element generated by circuit 78 so that a greater reference signal is produced during the first cycle of anti-skid operation, e.g. to allow for the effect of axle wrap.
GB46754/76A 1975-11-20 1976-11-10 Anti-lock brake control Expired GB1527559A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/633,674 US4037882A (en) 1975-11-20 1975-11-20 Anti-lock brake control circuit

Publications (1)

Publication Number Publication Date
GB1527559A true GB1527559A (en) 1978-10-04

Family

ID=24540647

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46754/76A Expired GB1527559A (en) 1975-11-20 1976-11-10 Anti-lock brake control

Country Status (8)

Country Link
US (1) US4037882A (en)
JP (1) JPS5264587A (en)
AU (1) AU501479B2 (en)
CA (1) CA1065449A (en)
DE (1) DE2646713A1 (en)
FR (1) FR2332157A1 (en)
GB (1) GB1527559A (en)
IT (1) IT1074921B (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4191430A (en) * 1977-01-14 1980-03-04 Knorr-Bremse Gmbh Anti-lock device for railway vehicles
DE2701456A1 (en) * 1977-01-14 1978-07-20 Knorr Bremse Gmbh ANTI-BLOCK PROTECTION DEVICE FOR VEHICLES, IN PARTICULAR RAIL VEHICLES
US4076332A (en) * 1977-01-24 1978-02-28 General Motors Corporation Wheel lock control circuit
FR2563791B1 (en) * 1984-05-04 1988-04-29 Bruss Polt I ANTI-LOCK BRAKING SYSTEM FOR MEANS OF TRANSPORT
GB8513688D0 (en) * 1985-05-30 1985-07-03 Lucas Ind Plc Vehicle braking system
JP2661106B2 (en) * 1988-02-29 1997-10-08 日産自動車株式会社 Anti-skid control device
US4900100A (en) * 1988-02-29 1990-02-13 Nissan Motor Company Limited Anti-skid brake control system with capability of eliminating influence of noise in derivation of wheel acceleration data
GB8814931D0 (en) * 1988-06-23 1988-07-27 Lucas Ind Plc Vehicle speed estimation in anti-lock braking systems
DE4009195A1 (en) * 1990-03-22 1991-09-26 Bosch Gmbh Robert ANTI-BLOCKING CONTROL SYSTEM
US5547267A (en) * 1995-02-03 1996-08-20 Kelsey-Hayes Company Method and system for antilock braking on a deformable surface
US6882920B2 (en) * 2003-04-29 2005-04-19 Goodrich Corporation Brake control system
US7180255B2 (en) * 2005-01-26 2007-02-20 Delphi Technologies, Inc. Controlling the release of a brush motor which has applied a load
CA2934736C (en) 2005-03-18 2017-10-17 Gatekeeper Systems, Inc. Two-way communication system for tracking locations and statuses of wheeled vehicles
WO2007025267A2 (en) 2005-08-25 2007-03-01 Gatekeeper Systems, Inc. Systems and methods for locating and controlling powered vehicles
US7658247B2 (en) * 2006-09-20 2010-02-09 Gatekeeper Systems, Inc. Systems and methods for power storage and management from intermittent power sources
WO2009137422A1 (en) 2008-05-05 2009-11-12 Gatekeeper Systems, Inc. Brake mechanism for a non-motorized wheeled vehicle

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3523712A (en) * 1966-11-16 1970-08-11 Teldix Gmbh Vehicle brake control system for preventing wheel locking
JPS4829677B1 (en) * 1968-08-21 1973-09-12
US3870376A (en) * 1968-09-20 1975-03-11 Kelsey Hayes Co Skid control system
US3578819A (en) * 1968-09-23 1971-05-18 Kelsey Hayes Co Skid control system
GB1332312A (en) * 1969-10-18 1973-10-03 Aisin Seiki Process and apparatus for antiskid control mechanism
JPS507231B1 (en) * 1969-10-18 1975-03-24
US3640588A (en) * 1970-03-03 1972-02-08 Bendix Corp Means for delaying effective control of vehicle braking by an adaptive braking system until certain wheel velocity and deceleration conditions have been satisfied
US3709567A (en) * 1971-03-26 1973-01-09 Gen Motors Corp Adaptive control anti-lock brake system
DE2243778C3 (en) * 1972-09-06 1980-08-07 Wabco Fahrzeugbremsen Gmbh, 3000 Hannover Circuit arrangement for anti-lock systems
JPS577940B2 (en) * 1973-02-09 1982-02-13

Also Published As

Publication number Publication date
AU1840676A (en) 1978-04-13
IT1074921B (en) 1985-04-22
FR2332157A1 (en) 1977-06-17
AU501479B2 (en) 1979-06-21
US4037882A (en) 1977-07-26
CA1065449A (en) 1979-10-30
JPS5264587A (en) 1977-05-28
DE2646713A1 (en) 1977-06-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee